uint8 ESC_STATUS_DISCONNECTED=99
uint8 ESC_STATUS_ERROR=100
uint8 ESC_STATUS_STALLED=150
uint8 ESC_STATUS_OK=200
uint8 ESC_STATUS_RUNNING=201

uint8   status
float32 current
uint32  tacho
int16   rpm
float32 temperature_motor
float32 temperature_pcb
